EP0452976A3 - Rf modulator requiring no test pattern generator - Google Patents

Rf modulator requiring no test pattern generator Download PDF

Info

Publication number
EP0452976A3
EP0452976A3 EP19910106443 EP91106443A EP0452976A3 EP 0452976 A3 EP0452976 A3 EP 0452976A3 EP 19910106443 EP19910106443 EP 19910106443 EP 91106443 A EP91106443 A EP 91106443A EP 0452976 A3 EP0452976 A3 EP 0452976A3
Authority
EP
European Patent Office
Prior art keywords
test pattern
pattern generator
modulator
requiring
modulator requiring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19910106443
Other versions
EP0452976A2 (en
EP0452976B1 (en
Inventor
Hiroyoshi C/O Intellectual Property Div. Mori
Sawa C/O Intellectual Property Div. Shigetaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba AVE Co Ltd
Original Assignee
Toshiba Corp
Toshiba Audio Video Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Audio Video Engineering Co Ltd filed Critical Toshiba Corp
Publication of EP0452976A2 publication Critical patent/EP0452976A2/en
Publication of EP0452976A3 publication Critical patent/EP0452976A3/en
Application granted granted Critical
Publication of EP0452976B1 publication Critical patent/EP0452976B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
EP91106443A 1990-04-23 1991-04-22 RF modulator requiring no test pattern generator Expired - Lifetime EP0452976B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2107151A JP2553219B2 (en) 1990-04-23 1990-04-23 RF modulator and video cassette recorder incorporating the same
JP107151/90 1990-04-23

Publications (3)

Publication Number Publication Date
EP0452976A2 EP0452976A2 (en) 1991-10-23
EP0452976A3 true EP0452976A3 (en) 1993-02-10
EP0452976B1 EP0452976B1 (en) 1996-06-19

Family

ID=14451803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106443A Expired - Lifetime EP0452976B1 (en) 1990-04-23 1991-04-22 RF modulator requiring no test pattern generator

Country Status (5)

Country Link
US (1) US5136387A (en)
EP (1) EP0452976B1 (en)
JP (1) JP2553219B2 (en)
KR (1) KR930011597B1 (en)
DE (1) DE69120335T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5369445A (en) * 1992-06-12 1994-11-29 Samsung Electronics Co., Ltd. Noise reducing apparatus and methods for television receivers
US6118497A (en) * 1998-03-11 2000-09-12 Thomson Consumer Electronics, Inc. Interactive selection system for a video decoder modulator channel
KR100550875B1 (en) * 2004-02-27 2006-02-10 삼성전기주식회사 Rf modulator with narrow band pass filter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286336A (en) * 1979-02-08 1981-08-25 Rca Corporation Automatic shutdown arrangement for stand-alone television modulator
US4500920A (en) * 1981-07-01 1985-02-19 Alps Electric Co., Ltd. RF Modulator
US4788590A (en) * 1984-04-17 1988-11-29 Murata Mfg. Co., Ltd. RF converter employing an SAW filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778718A (en) * 1972-04-28 1973-12-11 Avco Corp Modulation system
FR2437117A1 (en) * 1978-09-22 1980-04-18 Lgt Lab Gen Telecomm HIGH PERFORMANCE AMPLITUDE MODULATION TRANSMISSION SYSTEM AND TELEVISION TRANSMITTER AND TRANSMITTER COMPRISING SUCH A SYSTEM
US4491871A (en) * 1982-12-06 1985-01-01 Rca Corporation Audio-visual diplexed television transmitter in which the aural signal can be multiplexed without switching

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286336A (en) * 1979-02-08 1981-08-25 Rca Corporation Automatic shutdown arrangement for stand-alone television modulator
US4500920A (en) * 1981-07-01 1985-02-19 Alps Electric Co., Ltd. RF Modulator
US4788590A (en) * 1984-04-17 1988-11-29 Murata Mfg. Co., Ltd. RF converter employing an SAW filter

Also Published As

Publication number Publication date
JPH0418876A (en) 1992-01-23
EP0452976A2 (en) 1991-10-23
KR930011597B1 (en) 1993-12-13
EP0452976B1 (en) 1996-06-19
JP2553219B2 (en) 1996-11-13
DE69120335D1 (en) 1996-07-25
US5136387A (en) 1992-08-04
DE69120335T2 (en) 1996-12-12
KR910019045A (en) 1991-11-30

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